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A Three-Dimensional Nickel(II) Framework from a Semi-Flexible Bipyrimidyl Ligand Showing Weak Ferromagnetic Behavior.

ABSTRACT: A semi-flexible bipyrimidyl ligand, 5,5'-bipyrimidin (bpym), was used for the self-assembly of a transition metal coordination polymer, resulting in the formation of a nickel(II) compound, [Ni(Br)₂(bpym)₂]n (1) with a three-dimemsional (3D) structure. Single-crystal X-ray analysis showed that compound 1 crystallizes in the monoclinic space group C2/c and the structure represents a 3D (4,4)-connected bbe topological framework constructed of nickel(II) ions, twisted cis-μ-bpym and planar trans-μ-bpym groups. Magnetic characterization revealed that 1 shows antiferromagnetic coupling between the pyrimidyl-bridged Ni(II) ions along with weak ferromagnetism due to spin canting with a magnetic ordering below Tc = 3.4 K.

SUBMITTER: Dong SS 

PROVIDER: S-EPMC6401916 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature

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A Three-Dimensional Nickel(II) Framework from a Semi-Flexible Bipyrimidyl Ligand Showing Weak Ferromagnetic Behavior.

Dong Shin-Shan SS   Yang Chen-I CI  

Polymers 20190111 1

A semi-flexible bipyrimidyl ligand, 5,5'-bipyrimidin (bpym), was used for the self-assembly of a transition metal coordination polymer, resulting in the formation of a nickel(II) compound, [Ni(Br)₂(bpym)₂]<i><sub>n</sub></i> (<b>1</b>) with a three-dimemsional (3D) structure. Single-crystal X-ray analysis showed that compound <b>1</b> crystallizes in the monoclinic space group <i>C</i>2/c and the structure represents a 3D (4,4)-connected <b>bbe</b> topological framework constructed of nickel(II)  ...[more]

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